[CmdPal][UI Tests] Add basic test cases for cmdpal (#40694)

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fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request
1. Create some basic cmdpal test cases.
2. Add ui tests support for cmdpal modules.


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## PR Checklist

- [x] **Closes:** #40695
- [x] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [x] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

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or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

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wherever possible, but list manual validation steps taken as well -->
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---------

Co-authored-by: Yu Leng <yuleng@microsoft.com>

src/modules/cmdpal/Microsoft.CmdPal.UITests/BasicTests.cs

@@ -0,0 +1,151 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Threading.Tasks;
+using Microsoft.PowerToys.UITest;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace Microsoft.CmdPal.UITests;
+
+[TestClass]
+public class BasicTests : UITestBase
+{
+    public BasicTests()
+        : base(PowerToysModule.CommandPalette)
+    {
+    }
+
+    private void SetSearchBox(string text)
+    {
+        Assert.AreEqual(this.Find<TextBox>("Type here to search...").SetText(text, true).Text, text);
+    }
+
+    private void SetFilesExtensionSearchBox(string text)
+    {
+        Assert.AreEqual(this.Find<TextBox>("Search for files and folders...").SetText(text, true).Text, text);
+    }
+
+    private void SetCalculatorExtensionSearchBox(string text)
+    {
+        Assert.AreEqual(this.Find<TextBox>("Type an equation...").SetText(text, true).Text, text);
+    }
+
+    private void SetTimeAndDaterExtensionSearchBox(string text)
+    {
+        Assert.AreEqual(this.Find<TextBox>("Search values or type a custom time stamp...").SetText(text, true).Text, text);
+    }
+
+    [TestMethod]
+    public void BasicFileSearchTest()
+    {
+        SetSearchBox("files");
+
+        var searchFileItem = this.Find<NavigationViewItem>("Search files");
+        Assert.AreEqual(searchFileItem.Name, "Search files");
+        searchFileItem.DoubleClick();
+
+        SetFilesExtensionSearchBox("AppData");
+
+        Assert.IsNotNull(this.Find<NavigationViewItem>("AppData"));
+    }
+
+    [TestMethod]
+    public void BasicCalculatorTest()
+    {
+        SetSearchBox("calculator");
+
+        var searchFileItem = this.Find<NavigationViewItem>("Calculator");
+        Assert.AreEqual(searchFileItem.Name, "Calculator");
+        searchFileItem.DoubleClick();
+
+        SetCalculatorExtensionSearchBox("1+2");
+
+        Assert.IsNotNull(this.Find<NavigationViewItem>("3"));
+    }
+
+    [TestMethod]
+    public void BasicTimeAndDateTest()
+    {
+        SetSearchBox("time and date");
+
+        var searchFileItem = this.Find<NavigationViewItem>("Time and Date");
+        Assert.AreEqual(searchFileItem.Name, "Time and Date");
+        searchFileItem.DoubleClick();
+
+        SetTimeAndDaterExtensionSearchBox("year");
+
+        Assert.IsNotNull(this.Find<NavigationViewItem>("2025"));
+    }
+
+    [TestMethod]
+    public void BasicWindowsTerminalTest()
+    {
+        SetSearchBox("Windows Terminal");
+
+        var searchFileItem = this.Find<NavigationViewItem>("Open Windows Terminal Profiles");
+        Assert.AreEqual(searchFileItem.Name, "Open Windows Terminal Profiles");
+        searchFileItem.DoubleClick();
+
+        SetSearchBox("PowerShell");
+
+        Assert.IsNotNull(this.Find<NavigationViewItem>("PowerShell"));
+    }
+
+    [TestMethod]
+    public void BasicWindowsSettingsTest()
+    {
+        SetSearchBox("Windows Settings");
+
+        var searchFileItem = this.Find<NavigationViewItem>("Windows Settings");
+        Assert.AreEqual(searchFileItem.Name, "Windows Settings");
+        searchFileItem.DoubleClick();
+
+        SetSearchBox("power");
+
+        Assert.IsNotNull(this.Find<NavigationViewItem>("Power and sleep"));
+    }
+
+    [TestMethod]
+    public void BasicRegistryTest()
+    {
+        SetSearchBox("Registry");
+
+        var searchFileItem = this.Find<NavigationViewItem>("Registry");
+        Assert.AreEqual(searchFileItem.Name, "Registry");
+        searchFileItem.DoubleClick();
+
+        SetSearchBox("HKEY_LOCAL_MACHINE");
+
+        Assert.IsNotNull(this.Find<NavigationViewItem>("HKEY_LOCAL_MACHINE\\SECURITY"));
+    }
+
+    [TestMethod]
+    public void BasicWindowsServicesTest()
+    {
+        SetSearchBox("Windows Services");
+
+        var searchFileItem = this.Find<NavigationViewItem>("Windows Services");
+        Assert.AreEqual(searchFileItem.Name, "Windows Services");
+        searchFileItem.DoubleClick();
+
+        SetSearchBox("hyper-v");
+
+        Assert.IsNotNull(this.Find<NavigationViewItem>("Hyper-V Heartbeat Service"));
+    }
+
+    [TestMethod]
+    public void BasicWindowsSystemCommandsTest()
+    {
+        SetSearchBox("Windows System Commands");
+
+        var searchFileItem = this.Find<NavigationViewItem>("Windows System Commands");
+        Assert.AreEqual(searchFileItem.Name, "Windows System Commands");
+        searchFileItem.DoubleClick();
+
+        SetSearchBox("Sleep");
+
+        Assert.IsNotNull(this.Find<NavigationViewItem>("Sleep"));
+    }
+}

src/modules/cmdpal/Microsoft.CmdPal.UITests/Microsoft.CmdPal.UITests.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+	<Import Project="..\..\..\Common.Dotnet.CsWinRT.props" />
+
+	<PropertyGroup>
+		<RootNamespace>Microsoft.CmdPal.UITests</RootNamespace>
+		<AssemblyName>Microsoft.CmdPal.UITests</AssemblyName>
+		<IsPackable>false</IsPackable>
+		<IsTestProject>true</IsTestProject>
+		<Nullable>enable</Nullable>
+		<OutputType>Library</OutputType>
+		<!-- This is a UI test, so don't run as part of MSBuild -->
+		<RunVSTest>false</RunVSTest>
+	</PropertyGroup>
+
+	<PropertyGroup>
+		<OutputPath>$(SolutionDir)$(Platform)\$(Configuration)\tests\Microsoft.CmdPal.UITests\</OutputPath>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<PackageReference Include="MSTest" />
+		<PackageReference Include="System.Net.Http" />
+		<PackageReference Include="System.Private.Uri" />
+		<PackageReference Include="System.Text.RegularExpressions" />
+		<ProjectReference Include="..\..\..\common\UITestAutomation\UITestAutomation.csproj" />
+	</ItemGroup>
+</Project>